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library(Hmisc)
Error in library(Hmisc) : there is no package called ‘Hmisc’
df <- read.csv('stock_details_5_years.csv')
df_googl <- df[df$Company == "GOOGL", ]
df_googl
NA
NA
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ts.plot(df_googl$Open, xlab="Time", ylab = 'Googl Opening Prices')


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Around day 800 something happens, after which the data is more spread
out than in the beginning.

summary(openLM)
Call:
lm(formula = Open_diff2 ~ Open, data = df_googl)
Residuals:
Min 1Q Median 3Q Max
-9.6491 -0.9218 0.0243 0.9474 13.6759
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 0.271651 0.183060 1.484 0.138
Open -0.002123 0.001808 -1.174 0.241
Residual standard error: 1.915 on 1256 degrees of freedom
Multiple R-squared: 0.001096, Adjusted R-squared: 0.0003009
F-statistic: 1.378 on 1 and 1256 DF, p-value: 0.2406





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